Basic product good, automation product lacking

We use Bettercloud currently and have used it for years to facilitate offboarding and deprovisioning of G-Suite user accounts. We use it to setup auto-replies, and inheritance of the off-boarded user's Google products (Drive, Groups, Calendars) to another user. We do not use it for onboarding: we use an on-prem app to create users and sync that information to G-Suite, Azure, and local AD. That information appears in Bettercloud automatically as it syncs with our domain.

We are trying to use Bettercloud to automate on/offboarding of new hires/terminations, but Betterclouds integration with Workday does not include the ability to create a username/email address in the very common first initial, lastname @ domain.com. This is a very frustrating situation because we want HR to be able to dictate who is and isn't an active user based on their employment status. This means Workday would be the source of truth in terms of "should a user have access to company services/data," while not necessarily being the source of truth for "what does this specific user have access to?" We can handle that with titles from Workday and security groups from Azure. It's kind of ridiculous that the Workday integration can't create a user based on the first initial when the first name string exists. This seems like a simple engineering change to the integration that Bettercloud has little interest in doing. It's also surprising that other clients have no asked for this because it means the clients are doing more work to stick to years-long and firmly established naming convention for hires.